Switching to natalizumab or fingolimod in multiple sclerosis: Comparative effectiveness and effect of pre-switch disease activity

- Spelman, Tim; Horakova, Dana; Csepany, Tunde; Boz, Cavit; Lechner-Scott, Jeannette; Granella, Franco; Grand'Maison, Francois; van der Walt, Anneke; Zhu, Chao; Butzkueven, Helmut; Ozakbas, Serkan; Alroughani, Raed; Onofrj, Marco; Kalincik, Tomas; Prat, Alexandre; Terzi, Murat; Grammond, Pierre; Patti, Francesco